نتایج جستجو برای: implantable pacemaker
تعداد نتایج: 42491 فیلتر نتایج به سال:
BACKGROUND The presence of a cardiovascular implantable electronic device has long been a contraindication for the performance of magnetic resonance imaging (MRI). We established a prospective registry to determine the risks associated with MRI at a magnetic field strength of 1.5 tesla for patients who had a pacemaker or implantable cardioverter-defibrillator (ICD) that was "non-MRI-conditional...
Animal models have become a popular platform for the investigation of the molecular and systemic mechanisms of pathological cardiovascular physiology. Chronic pacing studies with implantable pacemakers in large animals have led to useful models of heart failure and atrial fibrillation. Unfortunately, molecular and genetic studies in these large animal models are often prohibitively expensive or...
AIMS The meta-analysis was to assess the safety and efficacy of periprocedural antithrombotic therapy and to evaluate the risk factors potentially associated with bleeding among patients undergoing cardiac implantable electronic devices implantations. METHODS AND RESULTS A systematic literature search of PubMed, EMBASE, and Cochrane Controlled Trials Register was performed. Anticoagulation an...
Recurrent syncope is a common clinical problem. Patients with recurrent syncope frequently undergo extensive investigations that consume significant health care resources. Nevertheless, in a large percentage of patients syncope remains unexplained. The implantable loop recorder is a recognized diagnostic tool that can provide a definitive diagnosis and thus permit specific treatment. We present...
OBJECTIVE To assess the safety and efficiency of the Excimer laser sheath in extracting chronically implanted pacemaker leads. PATIENTS Eight patients were studied (one female, mean age 62 years, range 34 to 77) with 17 pacemaker leads (five atrial, 10 ventricular, two implantable defibrillator). The mean implantation time was 65 months (range 23 to 188). The indications for lead extraction w...
This advisory summarizes the current database on pacing modalities and algorithms used to prevent and terminate atrial fibrillation (AF). On the basis of the evidence indicating that ventricular pacing is associated with a higher incidence of AF in patients with sinus node dysfunction, a patient who has a history of AF and needs a pacemaker for bradycardia should receive a physiological pacemak...
Cardiac pacing as a clinical discipline is now over 20 years old. The end of the first decade saw the development of the demand pacemaker, the first "intelligent" implantable prosthetic device. Further progress took place mostly in the latter half of the second decade, with the introduction of lithium power sources with greater longevity, miniaturisation of electronic circuits, overall improvem...
Background Imaging patients with a pacemaker (PM) or AICD has been mostly taboo in the MRI environment. However, with current improvements in PMlead and generator development along with very vigilant and knowledgeable personnel in pacemaker safety, MRI procedures can be implemented successfully. However, safe performance, not withstanding the risks, leads one to question if the results from the...
Background MRI has generally been contraindicated in patients (pts) with pacemakers (PM) or defibrillators (ICD) due to concern of a variety of potential complications. Several recent series have suggested potential safety of MRI in pts with cardiac devices, but most excluded cardiac or thoracic imaging. Additionally there is very limited data on safety of CMR in pts with devices, especially in...
The Pacemaker Clinic at Shahid Rajai Cardiovascular Research Center first started operating in August 1992. In its first year of operation, 294 permanent pacemaker patients were studied, allowing an appraisal to be carried out of the clinic's effectiveness in diagnosing and treating early complications. In the final analysis, pacemaker complications were observed in 68 (23%) patients, of wh...
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